USB Implementers Forum (USB-IF) announced a rebranding of the USB 3.0 and USB 3.1 under the USB 3.2.
USB 3.0 and USB 3.1 will now be considered the previous generations of the USB 3.2 .
Moving forward, USB 3.1 Gen 1 with transfer rate up to 5 Gb/s, which was previously USB 3.0, before a separate rebranding, will be called USB 3.2 Gen 1, while USB 3.1 Gen 2 transfer up to 10 Gb/s, now it will be known as USB 3.2 Gen 2.
To add confusion, the unprecedented USB 3.2 will not follow the convention expected to be called USB 3.2 Gen 3, but instead will be known as USB 3.2 Gen 2 × 2. Changing the odd numbering refers to its maximum data transfer rate of 20Gbps, which is achieved using two 10Gbps channels, which is twice the number of channels used by USB Gen 2.
The names of the specifications have nothing to do with the physicality of the connector. USB 3.2 Gen 1 and USB 3.2 Gen 2 can connect with the USB-A or USB-C connector. USB 3.2 gen 2 × 2 is limited to USB-C only. The trademark and the name of Thunderbolt 3 remain unchanged.
For marketing purposes, USB-IF suggests a somewhat more logical naming scheme. While USB 3.2 Gen 1 should be called SuperSpeed USB, Gen 2 must be defined SuperSpeed USB 10Gbps, with the inclusion of speed to denote it faster than Gen 1. USB 3.2 Gen 2 × 2 receives a marketing term similar to SuperSpeed USB 20Gbps.
Devices using USB 3.2 Gen 2×2 will arrive in 2019 on high-performance desktops, with devices likely to arrive in 2020 once standard support becomes more widespread.